Weighing-machine.



G. L. COCHIUS.

WEIGHING MACHINE. i APPLICATION HLBD M1119, 1909.

Patented Dec. 28, 1909.

n .w mw z W W G. L. COGHIUS. WBIGHING MACHINE. nrmcnxon Hum na. 18, 1909.

UNITED PATEN T OFFICE.

GERARD LOUIS COCHIUS, OF REMBOEN, JAVA, ASSIGNOR T0 MAATSCHAPPY TOT VOORTZETTING VAN DE ZAKEN DER FIRMA RUHAAK & CO., OF HAARLEIV, NETH- ERLANDS.

WEIGHING-MACHINE.

Specificaton of Letters Patent.

Application filed March 19, 1909.

Patented Dec. 28, 1909. Serial No. 484,513.

T 0 all whom 'it may concern:

Be it known that I, GERARD Louis Coemns, manufacturer7 subject of the Queen of the Netherlands, residing at Remboen, Residency of Koedoe, J a'va, Dutch East Indies, have invented certain new and useful Improvements in 7eighing-h/fachines, of which the following` is a specification.

This invention relates to automatic weighing machines for liquids, comprising two weighing Vessels and mechanism adapted to indicatc the number of weighing` Operations so that the machine is also self-registering. (h'dinary constructions of machines of this type are not satisfactory in that equal quantities of liquid can never be obtained at every weighingI operation therewith as the swing or tilt of the weighing vessels is prejudicially influenced by friction of the piyots, and friction at the various fulcra of the levers and rollers or chains employed so that at one time a Vessel swings or tilts over somewhat later than at a previous weighing` operation and so on. This is more likely to take place in that the weighin` machine mechanism has to operate other mechanisms, such for example, as the counter. These and other disadvantages that exist in ordinary automatic weighing` machines of this type are obviated in a weighing machine according to the present invention. In the improved machine the two vessels are of equal size and of similar Shape, are arranged side by Iside at an incline one to the other7 and the central axes of such Vessels are out of phase. The two Vessels are so arranged that when the one yessel is receiving liquid it is horizontal and the other Vessel is then in an inclined position so that the liquid can con- Veniently flow away therefrom, and Vice versa. The structure eomprising the two vessels is mounted to rock on steel knife edges upon corresponding` planes fixed in the frame or base of the machine and the said structure is Very accurately counterbalanced by means of weights so that only extremely small frictional resistances arise when tilting over takes place and great accuracy of measurement is thereby attained. The counter or indicating` mechanism is not operated by the tilting` structure itself but by the liquid which has fiowed away from the vessels thereof.

An example of a constructional form of weighing machine embodying` this invention is shown in the accompanying` drawings.

Figure 1 shows the machine partly in front elevation and partly in section corresponding` to the line -I of Fig. 2. Fig. 2 is a plan of the frame constituting` the base of the machine. Fig. 8 shows the machine partly in side ele "ation and partly in section. Fig. -1 is a detail View showing the liquid delivery spout and its Operating mechanism, to a larger scalc.

The improyed weighiu` machine illustrated comprises tu o weighing' vesscls 1 and 2 arranged side by side at such an angle to each other that when one is horizontal the other is slightly tilted, 3 being` a common central wall thatseparates the Vessels from each other. The vessels are carried on hardened steel knife edges 11 fixed to planes 5 upon transverse members of a metal framework (S constituting the base of the machine. At each side of such base and within the frame (i is arranged a receiving' tank 7, the two tanks freely communicating through Outlet openings 9 with a common centrally arranged collecting Vessel 8 from which the weighed liquid can flow away through a. pipe 10.

The bottom of each of the vessels 1 and 2 is furnished with a Valve 11 which is connected to or formed in one with a downwardly eytendingv spindle 12 that projccts below the bottom of the Yessel. The "alves are inclincd to the bottom of the vessels and below them are placed gutters 13 which deliver into the receiyingl tanks 7.

11 is a liquid supply gutter located above the vessels and from which liquid can [low into either of the two Vessels through an outlet branch 15 and a spout 10 which is mounted to rotate.

The center line of the knife edges 4 about which the yessels rock is not midway between the opposite walls of the Vessels, which eXtend parallel therewith, hut is to one side of such mid position, for example the cen tor line of each Vessel in the construction illustrated, lies 2-; cm. (two and one half cenlimcters) to one side of the center line of support so that in each Vessel one part is 5 cm. (five centimeters) longer than the other. Considering the two Vessels together it will be seen that although the line of support in reality lies in the center of thestructure comprising` the two, yet on each side of such center line of supportone. vessel projects 5 cm. (five centimeters) beyond the other vessel. lVhen either vessel is charged there will therefore be on the side which is 5 cm. (five centimeters) longer a greater weight of liquid than on the other side. The arrangement is such that each vessel in turn is caused to assume a horizontal position when it has received its charge of liquid and, in order to compensate the extra weight of liquid on the one side of the vessel, weights 17 are so arranged at the front and rear of the structure comprising the two vessels thata vertical center line dividing such structure into two parts of equal weight coincides with a line drawn from the points of the knife edges 11 through the centers of the weights 17, see Fig. 1. lt will thus be seen that the weights 17 consequently always lie on the shorter side of the vessel in position to receive liquid and that in order for such vessel to tilt over it must first assume a position in which its walls are vertical and its bottom horizontal. For the sake of clearness only part of the weight 17 on the front vessel 1 is shown in Fig. 1.

For the purpose of enabling` the extra weight of liquid to be accurately compensated at the instant of the tilting over of a charged vessel, small adjusting weights 18 are connected to the 'weights 17, see Figs. 1 and 8; by suitable adjustment of these weights the vessels instantly tilt over after having been filled with a definite weight of liquid. Furthermore for the purpose of enabling` the center of gravity of the structure comprising the two vessels to be accurately adjusted over the line of support there arranged on one side of the structure a weight 20 adapted to slide along a scale 19.

As stated it is the vessel which is in an approximately horizontal position that is supplied with liquid so that the liquid delivery spout 10 must be turned alternately from the one vessel which has received the desired quantity of liquid and has tilted, to the other which is empty. For this purpose the spout 1G is mounted upon a vertically rotating shaft 21 which has fixed upon it an arm or lever 22 the free end of which is embraced by a fork 24 fixed on an arm 23 that is rigidly secured to the common partition or wall 3. The arrangement is such, as will be seen, that as either vessel tilts the fork 2d of the arm 23 moves the spout 1G, through the shaft 21, from its position over the one vessel, across the partition or wall 8, into proper position over the other which is then in position for receiving liquid, so that liquid is automatically prevented from flowing` into the emptying vessel after such vessel has tilted over.

The horizontal position of the vessel which is being` fillecl is controlled by the inclined position of the other vessel and to enable accurate adjustment each vessel is furnished with a stop 2.3 on its under side adapted, when the vessel tilts, to rest on the upper end of adjustable bolts 2(3 carried by a suitable part of the machine base frame (3, such bolts forming` at each side a third point of support for the vessels, for which reason the stops 25 are fixed near to the outer side of the vessels exactly under the common central partition or wall 3.

For the purpose of opening the val\"es 11 when the vessels tilt over the valve spindles 12 project downwardly and upon the base frame G are arranged adjustable stops 27 011 which the valve spindles 12 rest so as to open the valves when the vessels are in their inclined or dischai'giiigl positions. In the inclined positions of the vessels the valves are in a hori'zzontal position which is most favorable for allo'wing the contents of the vessels to flow through. nimediately -the vessels return to the horizontal positions again after being elnptied, the valves close again by their own weight.

To prevent a full vessel striking 'with its entire weight upon the stop bolts 2(3 when tilted over which would in a short time so damage these bolts and the stops 25 that the accurate horizontal position of the other vessel would be ailfected, and in order to soften the shock ou the valve spindles 12 when striking the stops 27, butler arrangements are provided upon which the vessels first strike when tilted. lin the example shown each bu'tl'er arrangement comprises a hardened stop 28 located beneath the bottoin of the corresponding` vessel when such vessel is in its horizontal position or containingg' liquid and a bulfer head 29 in the path of such stop and which is elastically supported upon the vertical arm 30 of a two armed lever which is mounted to retate upon a fixed pin 31 that is located in the corresponding` receiving;` tank 7. The other arm 32 of the two armed lever vis provided with a tloat 33 in such a way that in the normal position the [ioat lies upon the bottoin of the tank '7 and the arm 30 is vertical so that when the correspondingv vessel tilts over the blow is taken up elastieally by the bulfer head 29 and, through the lever arm 30, by the pin 31. The stop 28 is carried by the bent end of the downwardly extending arm of a lever 341 pivoted to the corresponding vessel and the other arm of which lever is extended downwardly into the correspondino' vessel and. is provided at its lower end with an adjustable Heat 30. The arranrement is such that when either vessel, for example the vessel 2 in Fig. 1, is in an inelined position and is partially emptied, the lerer 31 is moved away from the vessel by the weight of the float 3G, as shown in Figg. 1, and the stop 28 is consequently dra wn away from under the vessel. Then a Vessel, having assumed the horizontal position, is supplied with liquid, the liquid rises to the float 3G and lifts it, the stop 28 is then again moved under the vessel as shown on the left hand side of Fig. 1, by the consequent partial rotation of the lever 34. This takes place shortly before the tilting over of the completely filled vessel.

The weighing machine is furnished with a registering apparatus comprising a vertically guided pusher rod 37 for each receiving tank 7, the lower end of which extends into the corresponding tank 7 and is there provided with a fioat 38, see Fig. 1, while the upper end is connected in the usual way with a counting mechanism adapted to register each time the tank 7 receives liquid.

The action of the improved weighing inachine is as follows: Assuming the parts to be in the positions shown in F ig. 1, after the vessel 1 has been almost completely filled with liquid from the spout 10 which is over it and after the project-1011 28 has been moved beneath it by the raising of the tloat 30 therein and the cons'equentI movement of the lever 34, this vessel will tilt over as soon as the overweight of liquid on the left hand side, see Fig. 1, is no longer compensated by the counter-weight 17, the Valve 11 thereof will thereupon be opened by the impact of the Valve spindle 12 against the stop 27 and the vessel 1 will be emptied through the gutter 13 into the corresponding receiving tank 7. At the same time the stop 28 has come into contact with the butfer head 29 and movement of the Vessel 1 has been elastically cushioned thereby, while, owing to the Vertical position of the lever arm 30, the weight of the Vessel 1 is carried by the pin 31. Liquid flows from the tank 7 through the opening` 9 in the collecting vessel 8; the cross sectional area of the opening is however but half thatl of the opening` Controlled by the Valve 11 so that the liquid will notwithstanding gradually rise in the tank 7 and the float 38 will be raised by the rising` liquid. The result of this is that the lever arm 80 is pushed to one side, that is to say to the left, see Fig. 8, and is therefore moved away from under the stop 28. To facilitate this movement the impact faces of both stop and buffer head are made partly spherical. The vessel 1 can now completely tilt over and finally the stop 25 will come quite gently into contact with the bolt 2G. The valve 11 will also be still further raised by the lower position so that the Vessel is now emptied still more quickly. In the meantime the level of the liquid in the vessel 1 has sunk to such an eXtent that the float 3G has become free so that the lever 34 will be rotated toward the left by its own weight, see Fig. 1, whereby the projeetion 28 will be moved outwardly from under the vessel 1 and assume the position relatively thereto shown on the right hand side of lfig. '1. Since, as hereinbefore stated, the cross sectional area of the opening 0 is but half that of the opening Controlled by the valve 11, the tank 7 will take twice the time to empty as the Vessel 1 so that during the time in which the vessel 2 is being filled the receiving tank 7 of the vessel 1 is gradnally emptying, finally the tloat 33 sinks down again and the lever arm 30 again returns to its vertical position ready to take up the shock of the vessel subsequently tilted over onto it. This movement of the buifer head 29 is completed while the vessel 1 still in its lowest inclined position and the lever arm 30 can assume its Vertical position without| hindrance and without the butfer head 20 coming into contact with the bottom of the vessel, the stop 28 having in the meantime been moved from under the vessel as hereinbefore described. The liquid delivery spout 10 is moved over the vessel 2 by the tilting over of the vessel 1 as hereinbefore set forth so that while the vessel 1 is emptyingl the vessel 2 is being filled during which operation it gradually assumes the horizontal position. At the same time as the liquid rises the t'toat 3(5 is raised and the stop 28 on this side is moved under the vessel 2. This vessel is now ready to tilt over and in doing so its stop 28 strikes against the hulfer head 25) for the purpose of taking up the shock, as just described with reference to the vessel 1.

It will be seen that the stops 28 and the buffer heads 22) are always caused to assume the right positions in order to take up the shock when the vessels are tilted over and are removed from these positions the instant the vessel has to swing farther over in order to take up its lowest position upon the adjustable stop bolt 20 and that at the same time, the stops 25 strike quite gently against' the bolt's 20 which is necessary for the maintenance of the accurate horizontal position of the vessel being filled. Inasmuch as therefore the vessels 1 and 2 are alternately supplied with accurately similar quantities of liquid, tilted over, and emptied, and as the number of these en'1ptying` Operations is registered, the improved weighing machine supplies a measuring apparatus for liquids, of a precision which it is believed has never existed heretofore in such type of weighing machines.

lhat I claim is 1. In a weighing machine for liquids. structure comprising two weighing ves` arranged side by side but displaced latcrally in relation to each other so that the central or gravity axes do not lie in the same Vertical plane but are located at opposite sides of the central or grayity axis of said structure and the bottoms of which ressels are at an angle to each other, a machine support, knife edges carried by said support on which said structure can rock, said knife edges being located in the central or gravity axis of said structure, means for supplying the weighing Vessels of said structure with liquid alternately, and means for alternately emptying the vessels of said structure at the completion of each weighing operation.

2. In a weighing machine, for liquids, a structure comprising two weighing Vessels arranged side by side but displaced laterally in relation to each other so that the central or gravity axes do not lie in the same Vertical plane but are located at opposite sides of the central or gravity axis of said structure and the bottoms of which vessels are at an angle to each other, a machine support, knife edges carried by said support on which said structure can rock, said knife edges being located in the central or gravity axis of said structure, means adapted to counterbalance the additional weight of that part of each Vessel of said structure which projects farthest over said knife edges, means for supplying the weighing vessels of said structure with liquid alternately, and means for alternately emptying the yessels of said structure at the completion of each weighing operation.

3. In a weighing machine for liquids, a structure comprising two weighing vessels arranged side by side with a common partition wall between them but displaced laterally in relation to each other so that the central or gravity aXes do not lie in the same Vertical plane but are located at opposite sides of the central or gravity axis of said structure and the bottoms of which Vessels are at an angle to each other, a machine support, knife edges carried by said support on which said structure can rock, said knife edges being located in the central or gravity axis of said structure, means for supplying the weighing vessels of said structure with liquid alternately, and means for alternately emptying the vessels of said structure at the completion of each weighing operation.

lu a weighing machine for liquids, a structure comprising two weighing` Vessels arranged side by side but displaced laterally in relation to each other so that the central or grzwity axes do not lie in the same Vertical plane but are located at opposite sides of the central or gravity aXis of said structure and the bottoms of which Vessels are at an angle to each other, a machine support, knife edges carried by said support on which said structure can rock, said knife edges being located in te central or gravity axis of said structure, weights arranged at the front and rear of said structure adapted to counterbalance the additional weight of that part of each vessel of said structure which projccts farthest over said knife edges, means for supplying the weighing Vessels of said. structure with liquid alternately, and means for alternately emptying the Vessels of said structure at the completion of each weighing operation.

5. In a weighing machine for liquids, a structure comprising two weighing vessels arranged side by side but displaced laterally in relation to each other so that the central or gravity axes do not lie in the same Vertical plane but are located at opposite sides of the central or gravity axis of said structure and the bottoms of which Vessels are at an angle to each other, a machine support, knife edges carried by said. supporton which said structure can rock, said knife edges being` located in the central or gravity axis of said structure, adjustable weights arranged at the front and rear of said structure adapted to c'unterbalance the additional \\'eiglit of that part of each vessel. of said structure which projects farthest over said knife edges, means for simplying the weighing vessels of 'said structure with liquid alternately, and means for alternately emptying the vessels of said structure at the completion of each weighing operation.

(5. In a weighing machine for liquids, a structure comprising two weighing` vessels arranged side by side but displaced laterally in relation to each other so that the central 01' gravity axes do not lie in the same Vertical plane but are located at opposite sides of the central or gravity axis of said structure and the bottoms of which vessels are at an angle to each other, a machine support, knife edges carried by said support on which said structure can rock, said knife edges being` located in the central or gravity axis of said structure, means for supplying the weighing 'vessels of said structure with liquid alternately, for each Vessel of said structure a discharge valve, and means adapted l to open said Valves when said structure rocks about said knife edges at the completion of weighing Operations.

7. In a weighing machine for liquids, a structure comprising two weighing vessels arranged side by side but displaced laterally in relation to each other so that the central or gravity axes do not lie in the same Vertical plane but are located at opposite sides of the central or gravity axis of said structure and the bottoms of which vessels are at an angle to each other, a machine support, knife edges carried by said support on which said structure can rock, said knife edges being located in the central or gravity axis of said structure, means for supplying the weighing vessels of said structure with liquid alternately, discharge Valves in the bottoms of the vessels of said structure, adapted to close by their own weight, downwardly extendiiig stems on said valves, and adjustable stops carried by said machine support oii which said Valve steins rest when tlie said structure rocks about said knite edges.

8. In a weighing inacliine for liquids, a structure comprising two weigliing vessels arranged side by side but displaced laterally iii relation to each other so that the ceiiti'al or gi'avity aXes do not lie in the same vertical plane but are located at opposite sides of the central or gravity aXis ot said structure and the bottoins of which vessels are at an angle to each other, a machine support, knife edges carried by said support on which said structure can rock, said knife edges being located in the central or gravity axis of said structure, bufi'er devices against which said structure bears when it rocks about said kniite edges, ineans for supplying the weighing vessels of said structure with liquid alternately, and ineans for alternately emptying the vessels of said structure at the coinpletion ot each weighing operation.

9. In a weighing inachine for liquids, a structure comprising` two weighing vessels arranged side by side but displaced laterally in relation to each other so that tlie central or gravity axes do not lie iii the same Vertical planc but are located at opposite sides of the central or gravity axis ot said structure and the bottoms of which vessels are. at aii angle to each other, a machine support, knite edges carried by said support on which said structure can rock, said knife edges being located in the central or gravity axis of said structure, butfer devices against which said structure bears when it rocks about said knife edges, means tor moving` said bulter devices out of operative positioiis while the vessels of said structure are discharging, .means for moving said butfer devices into operative positicns while said vessels are receiving liquid, means tor supplying the wi-ighing vessels ot said structure with liquid alternately, and means for alternately emptying the vessels ot' said structure at the completion ot' each weighing operation.

10. In a weighing machine for liquids a structure comprising two weighing vessels, a machine support, knife edges on said support on which said vessels can rock, means tor snpplying said vessels alternately with liquid, means for einptying said vessels alternately as said vessels rock about said knite edges, for each said vessel a tank adapted to receive the contents of said vessel, fioats in said tanks, levers connected to said floats, elastically inoniited butfer lieads carried by said levers, that are in positions to support said vessels when said fioats are down and are out of such positions when said fioats are ra'ised by liquid within said tanks, and pivots on which levers can turn.

11. In a weighing machiiie for liquids a structure comprising two weighing vessels,

a machine support, knite edges on said support oii which said vessels can rock, means tor supplying said vessels alternately with liquid, discharge valves in the bottom of said vessels, means tor opening said valves as said vessels rock about said knite edges,

for each said vessel a tank adapted to receive the contents of said vessel and fornied with a discharge opeiiing the cross` sectional area of which is less than that ot the openings coiitrolled by the said discharge valves, floats in said taiiks, levers connected to said floats, elastically mounted bulter heads carried by said levers, that are in position to supportsaid vessels when said floats are down and are out of such positions when said tioats are raised by liquid within said tanks, and pivots on which levers can turn.

12. In a weighing machine tor liquids a. structure coinprisiiig two weighing vessels, a machine support, knife edges oii said support on which said vessels can rock, means for supplying said vessels alternately with liquid, stops on said vessels, buttei' devices against which said vessels bear through said stops when rocked about said knite edges, means for moving said stops clear ot said buffer devices while said vessels are discharging their contents, and means tor einptying` said vessels alternately as said vessels rock about said knit'e edges.

13. In a` wcighing machine 'tor liquids a structure compi'ising two weighing vessels, a machine support, knite edgcs oii said support on which said vcsscls can rock, means tor supplying said vessels alternately with liquid, stops on said vessels, butler devices against which said vessels bear through said stops when rocked about said knite edges, levers pivoted to said vessels and carryin, said stops, tloats within said vessels connected to said levers, and means 'tor emptving said vessels altcrnatelv as said vessels rock about said knite (alges.

let. In a weighing machine tor liquids a structure comprising two wcighing vessels, a machine support, knite edges on said support on which said vessels can rock, ineans oi' supplying said vessels alternately with liquid, stops on said vessels, butfer devices against which said vessels bear through said stops when rocked about said knite edges, means for moving said stops clear ot said bufier devices while said vessels are discharging their contents, means for moving` said butler devices out ot operative positions while said vessels are discharging their contents, and means tor emptying said vessels alternately as said vessels rock about said knifc edges.

15. In a weighing machine for liquids, a structure comprising two weighing vessels arranged side by side but displaced laterally in relation to each other so that the central or gravity axes do not lie iii the same Vertical plane but are located at opposite sides of the central or gravity axis of said structure and the bottoms of which Vessels are at an anglc to each other, a machine support, knife edges carried by said.

support on which said structure can rock, said knife edge being located in the central or gravity axis of said structure, a pivoted spout through which the vessels of said structure are supplied with liquid, means for moving said spout from over one Yessel of said structure to over the other Vessel of said structure as said structure roeks about said knife edges, and means for alternately emptying the Vessels of said structure at the completion of each weighing operation.

1G. In a weighing` machine for liquids, a structure comprising` two weighing lVessels arranged side by side but displaced laterally in relation to each other so that the central or gravity aXes do not lie in the same Vertical plane but are located at opposite sides of the central or gravity axis of said structure and the bottoms of which vessels are at an angle to each other, a machine support, knife edges carried by said support on which said structure can rock, said knife edges beingl located in the central or gravity axis of said structure, a spout through which the Yessels of said structure are supplied with liquid, a rotary spindle on which said spout is fixed, an arm fixed on said spindle, a part on said struceure that engages said arm and moves it as said structure rocks about such knife edges, and means for alternately emptying` the Vesscls of said structure at the completion of each weighing operation.

17. In a weighing` machine for liquids a structure comprising two weighing` ressels,

a machine support, knife edges on said support on which said vessel can rock, means for supplying said vessels alternately with liquid, means for emptying said vessels alternately as 'said Vessels rock about said, knife edges, tanks into which liquid from said Vessels is alternately dclirered and from which the liquid flows away, tloats located in said tanks, and counting` mechanism operated by said floats adapted to register the number of weighingl Operations.

18. In a weighing' machine for liquids, a structure comprising` two weighing vessels arranged side by side but displaced later'- ally in relation to xach other so that the central or gravity do not lie in the same Vertical plane but are located at opposite sides of the central or gravity axis of said structure and the bottoms of which Vessels are at an angle to each other such that when the one is inclined for discharg'- ing the other is horizontal, a machine support, knife edges carried by said support on which said structure can rock, said knife edges being located in the central or gravity axis of said structure, ineans for supplying the weighing Yessels of said structure with liquid alternately, and means for alternately emptying` the Yessels of said structure at the completion of each weighin` operation.

In testimony whereof l have hcreunto set my hand in presence of two subsciibing witnesses.

GERARD LOUIS GOGHIUS.

Vitnesses Tiuionooa Josaui Aaor Tacoinri'rl lltliuuuvussemv. Flmus Dawn Coeuufs. 

